2 files changed, 108 insertions, 0 deletions

diff --git a/src/lib/libcrypto/asn1/asn1.h b/src/lib/libcrypto/asn1/asn1.h
index 176a3d5b82..78705da909 100644
--- a/src/lib/libcrypto/asn1/asn1.h
+++ b/src/lib/libcrypto/asn1/asn1.h
@@ -760,6 +760,10 @@ typedef struct BIT_STRING_BITNAME_st {
                 (ASN1_UTF8STRING *)d2i_ASN1_type_bytes\
                 ((ASN1_STRING **)a,pp,l,B_ASN1_UTF8STRING)
 
+  /* for the is_set parameter to i2d_ASN1_SET */
+#define IS_SEQUENCE     0
+#define IS_SET          1
+
 DECLARE_ASN1_FUNCTIONS_fname(ASN1_TYPE, ASN1_ANY, ASN1_TYPE)
 
 int ASN1_TYPE_get(ASN1_TYPE *a);
@@ -1035,7 +1039,14 @@ int ASN1_TYPE_set_int_octetstring(ASN1_TYPE *a, long num,
 int ASN1_TYPE_get_int_octetstring(ASN1_TYPE *a,long *num,
         unsigned char *data, int max_len);
 
+STACK_OF(OPENSSL_BLOCK) *ASN1_seq_unpack(const unsigned char *buf, int len,
+                                 d2i_of_void *d2i, void (*free_func)(OPENSSL_BLOCK));
+unsigned char *ASN1_seq_pack(STACK_OF(OPENSSL_BLOCK) *safes, i2d_of_void *i2d,
+                             unsigned char **buf, int *len );
+void *ASN1_unpack_string(ASN1_STRING *oct, d2i_of_void *d2i);
 void *ASN1_item_unpack(ASN1_STRING *oct, const ASN1_ITEM *it);
+ASN1_STRING *ASN1_pack_string(void *obj, i2d_of_void *i2d,
+                              ASN1_OCTET_STRING **oct);
 
 ASN1_STRING *ASN1_item_pack(void *obj, const ASN1_ITEM *it, ASN1_OCTET_STRING **oct);
 
diff --git a/src/lib/libcrypto/asn1/asn_pack.c b/src/lib/libcrypto/asn1/asn_pack.c
index 9752a68206..8eb39e6a9b 100644
--- a/src/lib/libcrypto/asn1/asn_pack.c
+++ b/src/lib/libcrypto/asn1/asn_pack.c
@@ -60,6 +60,103 @@
 #include "cryptlib.h"
 #include <openssl/asn1.h>
 
+#ifndef NO_ASN1_OLD
+
+/* ASN1 packing and unpacking functions */
+
+/* Turn an ASN1 encoded SEQUENCE OF into a STACK of structures */
+
+STACK_OF(OPENSSL_BLOCK) *
+ASN1_seq_unpack(const unsigned char *buf, int len, d2i_of_void *d2i,
+    void (*free_func)(OPENSSL_BLOCK))
+{
+        STACK_OF(OPENSSL_BLOCK) *sk;
+        const unsigned char *pbuf;
+
+        pbuf = buf;
+        if (!(sk = d2i_ASN1_SET(NULL, &pbuf, len, d2i, free_func,
+                                        V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL)))
+                ASN1err(ASN1_F_ASN1_SEQ_UNPACK,ASN1_R_DECODE_ERROR);
+        return sk;
+}
+
+/* Turn a STACK structures into an ASN1 encoded SEQUENCE OF structure in a
+ * OPENSSL_malloc'ed buffer
+ */
+
+unsigned char *
+ASN1_seq_pack(STACK_OF(OPENSSL_BLOCK) *safes, i2d_of_void *i2d,
+    unsigned char **buf, int *len)
+{
+        int safelen;
+        unsigned char *safe, *p;
+
+        if (!(safelen = i2d_ASN1_SET(safes, NULL, i2d, V_ASN1_SEQUENCE,
+                                              V_ASN1_UNIVERSAL, IS_SEQUENCE))) {
+                ASN1err(ASN1_F_ASN1_SEQ_PACK,ASN1_R_ENCODE_ERROR);
+                return NULL;
+        }
+        if (!(safe = malloc(safelen))) {
+                ASN1err(ASN1_F_ASN1_SEQ_PACK,ERR_R_MALLOC_FAILURE);
+                return NULL;
+        }
+        p = safe;
+        i2d_ASN1_SET(safes, &p, i2d, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL,
+                                                                 IS_SEQUENCE);
+        if (len)
+                *len = safelen;
+        if (buf)
+                *buf = safe;
+        return safe;
+}
+
+/* Extract an ASN1 object from an ASN1_STRING */
+
+void *
+ASN1_unpack_string(ASN1_STRING *oct, d2i_of_void *d2i)
+{
+        const unsigned char *p;
+        char *ret;
+
+        p = oct->data;
+        if (!(ret = d2i(NULL, &p, oct->length)))
+                ASN1err(ASN1_F_ASN1_UNPACK_STRING,ASN1_R_DECODE_ERROR);
+        return ret;
+}
+
+/* Pack an ASN1 object into an ASN1_STRING */
+
+ASN1_STRING *
+ASN1_pack_string(void *obj, i2d_of_void *i2d, ASN1_STRING **oct)
+{
+        unsigned char *p;
+        ASN1_STRING *octmp;
+
+        if (!oct || !*oct) {
+                if (!(octmp = ASN1_STRING_new())) {
+                        ASN1err(ASN1_F_ASN1_PACK_STRING,ERR_R_MALLOC_FAILURE);
+                        return NULL;
+                }
+                if (oct)
+                        *oct = octmp;
+        } else
+                octmp = *oct;
+                
+        if (!(octmp->length = i2d(obj, NULL))) {
+                ASN1err(ASN1_F_ASN1_PACK_STRING,ASN1_R_ENCODE_ERROR);
+                return NULL;
+        }
+        if (!(p = malloc (octmp->length))) {
+                ASN1err(ASN1_F_ASN1_PACK_STRING,ERR_R_MALLOC_FAILURE);
+                return NULL;
+        }
+        octmp->data = p;
+        i2d (obj, &p);
+        return octmp;
+}
+
+#endif
+
 /* ASN1_ITEM versions of the above */
 
 ASN1_STRING *